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PROGRAM:
NAME
PDL::Delta - PDL changes between V1.0 and V2.0
DESCRIPTION
This file is an attempt to list the major user-visible changes between PDL versions 1.0
and 2.0.
Core Changes
Piddles are not hashes any more:
$a = zeroes 10,10;
$$a{FOO} = "bar"
doesn't work. They are currently scalar references (to opaque C structures in finer terms)
because of speed as well as syntactic issues. If you want to have a hash, use
$a->hdr()
which returns a reference to an anonymous hash. Also, subclassing works if you store a
piddle in the hash member ``PDL''.
There are also many core enhancements to support Dataflow and Slicing tricks, but these do
not introduce any incompatibilities.
Incompatible Changes vs 1.11
rgrep
Order of the arguments has changed.
copy method
No longer copies the header. This may not be a misfeature.
Documentation Changes
Many of the base and library pods were updated.
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